Academic literature on the topic 'Protesi mammaria'

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Journal articles on the topic "Protesi mammaria"

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Schimmele, Bernhard, Nico Gräfe, and Andreas Plückthun. "Ribosome display of mammalian receptor domains." Protein Engineering, Design and Selection 18, no. 6 (June 1, 2005): 285–94. http://dx.doi.org/10.1093/protein/gzi030.

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Li, E., A. Pedraza, M. Bestagno, S. Mancardi, R. Sanchez, and O. Burrone. "Mammalian cell expression of dimeric small immune proteins (SIP)." Protein Engineering Design and Selection 10, no. 6 (June 1, 1997): 731–36. http://dx.doi.org/10.1093/protein/10.6.731.

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Shulga-Morskoy, S., and B. E. Rich. "Bioactive IL7-diphtheria fusion toxin secreted by mammalian cells." Protein Engineering Design and Selection 18, no. 1 (February 24, 2005): 25–31. http://dx.doi.org/10.1093/protein/gzi007.

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Corish, Pete, and Chris Tyler-Smith. "Attenuation of green fluorescent protein half-life in mammalian cells." Protein Engineering, Design and Selection 12, no. 12 (December 1999): 1035–40. http://dx.doi.org/10.1093/protein/12.12.1035.

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Guglielmi, Laurence, Vincent Denis, Nadia Vezzio-Vié, Nicole Bec, Piona Dariavach, Christian Larroque, and Pierre Martineau. "Selection for intrabody solubility in mammalian cells using GFP fusions." Protein Engineering, Design and Selection 24, no. 12 (October 13, 2011): 873–81. http://dx.doi.org/10.1093/protein/gzr049.

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Majors, B. S., G. G. Chiang, N. E. Pederson, and M. J. Betenbaugh. "Directed evolution of mammalian anti-apoptosis proteins by somatic hypermutation." Protein Engineering Design and Selection 25, no. 1 (December 9, 2011): 27–38. http://dx.doi.org/10.1093/protein/gzr052.

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Launay, G., S. Teletchea, F. Wade, E. Pajot-Augy, J. F. Gibrat, and G. Sanz. "Automatic modeling of mammalian olfactory receptors and docking of odorants." Protein Engineering Design and Selection 25, no. 8 (June 12, 2012): 377–86. http://dx.doi.org/10.1093/protein/gzs037.

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Lorenzo, Consuelo, Jorge E. Bolaños-Citalán, and Oscar G. Retana-Guiascón. "Rediscovery of Heteromys nelsoni in its type locality after over a century." Mammalia 84, no. 1 (December 18, 2019): 6–9. http://dx.doi.org/10.1515/mammalia-2018-0154.

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Abstract We rediscovered a population of Nelson’s spiny pocket mouse (Heteromys nelsoni; Merriam, 1902) in the type locality of Pinabeto in the Mexican state of Chiapas, 121 years after it was last collected. We describe five topotype specimens according to their morphology and external measurements, and we confirm its identity at the species level in the Basic Local Alignment Search Tool (BLAST) of GenBank. As the population of H. nelsoni in Pinabeto is isolated, it is likely to be susceptible to extinction. There is a need to carry out additional scientific studies of this microendemic species in order to obtain more information regarding its biology, ecology and evolutionary history, and to be able to influence environmental policy to protect and conserve this species, as well as the region’s cloud forests.
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Martinez, Marcio A., Manfredo Alejandro Turcios-Casco, and Shasling Pacheco Amador. "On the conservation of Myrmecophaga tridactyla (Pilosa: Myrmecophagidae) in the core of Río Plátano Biosphere Reserve, Honduras." Mammalia 84, no. 6 (November 26, 2020): 581–85. http://dx.doi.org/10.1515/mammalia-2019-0152.

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AbstractThe Río Plátano Biosphere Reserve (RPBR) represents the most important region in Honduras for conservation of the biodiversity of the country. From May 2017 to January 2019, we installed 24 camera traps in the RPBR to monitor big mammals, including Myrmecophaga tridactyla. In 1512 camera-trapping hours, the giant anteater was recorded in two photos. The photos presented herein of M. tridactyla are the first records of the species in the core of the RPBR. The protection of a vulnerable species such as M. tridactyla in the RPBR could also help to protect other species (Pecari tajacu, Tayassu pecari, Panthera onca) that are strongly threatened by illegal activities such as hunting, unauthorized access to the core zone, increased lands used for agriculture, and unsustainable exploitation of the natural resources.
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Kvam, Erik, Michael R. Sierks, Charles B. Shoemaker, and Anne Messer. "Physico-chemical determinants of soluble intrabody expression in mammalian cell cytoplasm." Protein Engineering, Design and Selection 23, no. 6 (April 8, 2010): 489–98. http://dx.doi.org/10.1093/protein/gzq022.

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Dissertations / Theses on the topic "Protesi mammaria"

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Nuti, Nicola. "I Biomateriali impiegati nelle applicazioni protesiche estetiche." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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L'obiettivo principale di questo lavoro di tesi compilativa è stato quello di descrivere nel più ampio modo possibile tutti gli aspetti più importanti che si affrontano nella progettazione dei dispositivi in biomateriale, appartenenti al campo della protesica estetica. Questo è un settore in costante crescita, grazie all’impulso offerto dal mercato dei paesi in “via di sviluppo”, data l’affermazione della sua importanza nel contesto sociale di questi ultimi. Nel settore delle protesi estetiche, poiché l’aspetto funzionale coincide proprio con l’impatto estetico, i vincoli meccanici o di sicurezza elettrica, che caratterizzano altre applicazioni protesiche, risultano molto allentati: nell’ambito della protesica estetica infatti, il maggior vincolo di progettazione risiede della biocompatibilità. Saranno perciò introdotte e valutate le questioni inerenti all’affidabilità ma soprattutto alla biocompatibilità del biomateriale: riguardo a quest’ultima verranno stilate le tecniche di analisi e lavorazione e rivestimento superficiale, quindi i test di biocompatibilità in uso nel settore. Nell’affrontare tutti gli aspetti, sarà riservata particolare attenzione ed approfondimento al settore delle protesi mammarie, considerato il caso di studio del presente lavoro bibliografico di cui verranno citati tecnologie, problematiche e stato dell’arte contemporanei. Infine, saranno esposti storia tecnologica, funzionamento, criticità ancora in essere e sviluppi futuri di corone dentarie (corona di impianto dentale) e fillers in uso nella chirurgia maxillo facciale.
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Dou, Dengfeng. "Mammalian and viral protease inhibitors." Diss., Wichita State University, 2010. http://hdl.handle.net/10057/3281.

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Chronic Obstructive Pulmonary Disease (COPD) is currently the fourth leading cause of death in the US. COPD is a multi-factorial disorder characterized by an oxidant/antioxidant imbalance, inflammation, a protease/antiprotease imbalance and apoptosis. This dissertation describes a general strategy for the design, synthesis and biochemical evaluation of dual function inhibitors which could potentially interrupt the above disorder, thereby enhancing the treatment of COPD. An example of this type inhibitor based on the 1,2,5-thiadiazolidin-3-one scaffold has been proven effective against both human neutrophil elastase (HNE) and caspase-1, two key enzymes responsible for elastin degradation and inflammation, respectively. In addition, an X-ray crystal structure and a high resolution mass spectrum of inhibitor bonded HNE have proven the proposed mechanism of HNE inactivation. Furhtermore, simple reversible competitive inhibitors of COPD-related enzymes (HNE and proteinase 3) have also been designed, synthesized and evaluated biochemically. West Nile virus and Dengue virus are recognized as a major health threat that affects millions of people worldwide. However, there is currently no treatment or vaccine available for the virus infection. This dissertation describes the design, synthesis and biochemical evaluation of reversible competitive inhibitors of both West Nile virus and Dengue virus NS2B-NS3 protease. Combinatorial chemistry and click chemistry methods have been used in the design of the protease inhibitor and the identified hit was optimized using computational programs (AutoDock4 and SYBYL). Several more hits were identified during the optimization and further development could potentially lead to very potent inhibitors of NS2B-NS3 protease with good pharmacokinetics and oral bioavailability.
Thesis (Ph.D.)--Wichita State University, College of Liberal Arts and Sciences, Dept. of Chemistry
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BERNARD, DOMINIQUE. "Expression des antigenes hla-dr par le tissu mammaire dans les cancers du sein." Clermont-Ferrand 2, 1986. http://www.theses.fr/1986CLF2E367.

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Mise au point d'une technique permettant le masquage de l'anticorps monoclonal anti hla-dr et de l'antigene hla-dr des cellules, l'immunoprecipitation des antigenes hla-dr, l'isolement de l'immun complexe et sa quantification par chromatofocusing. Mise en evidence de la regulation hormonale de l'expression des antigenes: en particulier role de la prolactine de l'oestradiol et de la progesterone. Effets de la gestation et de la lactation. Travail effectue sur la tumeur mammaire chimio-induite par la n-nitroso-n-methyluree chez la rate ainsi que sur un modele tumoral humain: la lignee mcf7
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Terrone, Donato Gerardo. "Ras protein targeting in mammalian cells." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98506.

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The Ras proteins (H-Ras, N-Ras and K-Ras4B) are monomeric GTP-binding proteins that play key roles in cell regulation. It has been proposed that correct plasma membrane localization of the Ras proteins requires 'two signals', the processed farnesylation sequence and an adjacent palmitoylation site(s) or polybasic sequence. First, to investigate potential proteinaceous binding partners for the K-Ras4B targeting sequence at the plasma membrane, an in vivo crosslinking analysis was carried out. Consistent with current suggestions that K-Ras4B interacts via electrostatic interactions with plasma membrane lipids, no indication of a K-Ras4B plasma membrane binding partner was found. In the second portion of this thesis, I describe the development of a new approach, using fluorescence microscopy and the technique of rapamycin-induced protein heterodimerization, to demonstrate that prenylated proteins lacking a 'second signal' are not specifically sequestered in the endoplasmic reticulum and Golgi compartments as suggested previously but can distribute freely and rapidly between different cellular membranes.
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Lee, Melanie. "Characterisation of the mammalian P23 protein." Thesis, St George's, University of London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263724.

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Zotter, Angelika Monika. "Protein Dynamics in Mammalian Genome Maintenance." [S.l.] : Rotterdam : [The Author] ; Erasmus University [Host], 2008. http://hdl.handle.net/1765/12292.

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Alnagar, Fahima Ali. "Protein phosphorylation in mammalian sperm during capacitation." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54246/.

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Subcellular fractionation revealed that pp97, pp96 and pp64 are head protein whereas pp90 and pp55 are tail proteins. Advanced proteomic analysis (GeLC-MS) identified 37 proteins, including AKAP4, AKAP3, CALI, HSPAlL and HSP70 as candidates for the dephosphorylated proteins. AKAP4 was excluded because it was localised to the tail. Two AKAP3 antibodies showed non-specific binding and a better quality antibody will be needed for further investigations. CALI was excluded because it was localised to the tail fraction. HSP70/72 and HSPA1L were strong candidates for pp64. However, immunoprecipitation of dephosphorylated proteins using phospho (S/T) PKA substrate Ab and HSPA1L Ab was unsuccessful and further work is now required to address this.
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Hlaing, Daren John. "Characterisation of a novel mammalian rhomboid protease." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612873.

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Keen, Michael John. "Low-protein media for specialised mammalian cells." Thesis, London South Bank University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336367.

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Volkmar, Norbert. "The mammalian EMC in membrane protein biogenesis." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:27a4910a-fb8a-4ce7-97d6-7051c2cae9d0.

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The mammalian Endoplasmic Reticulum Membrane protein Complex (mEMC) has previously been implicated in a range of cellular activities, including the biogenesis of oligomeric plasma membrane receptors, endoplasmic reticulum (ER)-mitochondrial phospholipid transfer, and as a host factor modulating viral pathogenicity. Despite its evolutionary conservation in all eukaryotes, the biological functions and molecular mechanism of the EMC remain poorly understood. Here, the requirement of the mEMC for integral membrane protein biogenesis is investigated. It is reported that the mEMC is involved in the biogenesis of squalene synthase (SQS), an integral ER-resident cholesterogenic enzyme with tail-anchor protein topology. The mEMC is assembled from 10 subunits (EMC1 - 10). Quantitative proteomics on mEMC-deficient ΔEMC5 and ΔEMC6 U2OS Flp-In cells revealed reduced steady-state levels of select cell surface and intracellular proteins. In particular, both EMC5 and EMC6 knockout cells exhibited substantial co-depletion of SQS. The enzyme was significantly destabilized and rapidly degraded by the ubiquitin/proteasome system (UPS) in ΔEMC6 cells. Cells lacking the mEMC were viable under replete media conditions, but were prone to enhanced cell death upon acute cholesterol depletion. Sensitivity to cholesterol loss in EMC6 knockout cells was reproduced by direct deletion or pharmacological inhibition of SQS. mEMC depletion also caused imbalances in the mevalonate pathway, likely leading to increased shunting of the farnesyl pyrophosphate precursor into the isoprenoid pathway, increasing the detection of prenylated proteins. It is proposed that the mEMC is a maturation factor for SQS, and potentially other transmembrane proteins sharing critical molecular features with the biogenesis of this enzyme.
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Books on the topic "Protesi mammaria"

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Hartley, James L., ed. Protein Expression in Mammalian Cells. Totowa, NJ: Humana Press, 2012. http://dx.doi.org/10.1007/978-1-61779-352-3.

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Hacker, David L., ed. Recombinant Protein Expression in Mammalian Cells. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-8730-6.

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Hauser, Hansjörg, and Roland Wagner, eds. Mammalian Cell Biotechnology in Protein Production. Berlin, New York: DE GRUYTER, 1997. http://dx.doi.org/10.1515/9783110809282.

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Ho, Sylvia. Chaperone-assisted protein disaggregation in the mammalian system. Ottawa: National Library of Canada, 2003.

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Protein expression in mammalian cells: Methods and protocols. New York: Humana Press, 2012.

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Grand, Roger John Alfred. The relationship of protein structure to function: Studies on mammalian and viral regulatory polypeptides. Birmingham: University of Birmingham, 1986.

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Kim, Sandra Ann. Attempts to express the regulatory domain of protein kinase C-alpha in mammalian cell lines. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1999.

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1959-, Gabai Vladimir L., ed. Heat shock proteins and cytoprotection: ATP-deprived mammalian cells. Austin, Tx: R.G.Landes, 1996.

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Kabakov, Alexander E. Heat shock proteins and cytoprotection: ATP-deprived mammalian cells. New York: Springer, 1997.

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(Editor), Hansjorg Hauser, and Roland Wagner (Editor), eds. Mammalian Cell Biotechnology in Protein Production. Walter de Gruyter, 1997.

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Book chapters on the topic "Protesi mammaria"

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Veeraragavan, Kannappan, and Claude Gagnon. "Mammalian Protein Methylesterase." In Advances in Post-Translational Modifications of Proteins and Aging, 293–306. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4684-9042-8_23.

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Swiech, Lukasz J., Malgorzata Urbanska, Matylda Macias, Agnieszka Skalecka, and Jacek Jaworski. "Mammalian Target of Rapamycin." In Protein Kinase Technologies, 291–318. Totowa, NJ: Humana Press, 2012. http://dx.doi.org/10.1007/978-1-61779-824-5_17.

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Rosen, Jeffrey M. "Milk Protein Gene Structure and Expression." In The Mammary Gland, 301–22. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4899-5043-7_9.

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Erickson, Ann H., and Jeffrey P. Bocock. "Targeting to Lysosomes in Mammalian Cells." In Protein Targeting Protocols, 339–62. Totowa, NJ: Humana Press, 2007. http://dx.doi.org/10.1007/978-1-59745-466-7_23.

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Castro, Fidel Ovidio. "Regulation of the Betalactoglobulin and Whey Acidic Protein Genes." In Mammary Gland Transgenesis, 65–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-03372-2_5.

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Hirschberg, C. B. "Protein Glycosylation in Mammalian Cells." In The Subcommissural Organ, 73–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78013-4_9.

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Lee, Choogon. "Protein Extraction From Mammalian Tissues." In Methods in Molecular Biology, 385–89. Totowa, NJ: Humana Press, 2007. http://dx.doi.org/10.1007/978-1-59745-257-1_29.

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Ward, Theresa H., and Jennifer Lippincott-Schwartz. "The Uses of Green Fluorescent Protein in Mammalian Cells." In Green Fluorescent Protein, 305–37. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/0471739499.ch14.

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Ward, Theresa H. "Trafficking Through the Early Secretory Pathway of Mammalian Cells." In Protein Targeting Protocols, 281–96. Totowa, NJ: Humana Press, 2007. http://dx.doi.org/10.1007/978-1-59745-466-7_19.

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Zhai, Yi-Fan, Julie J. Wirth, Clifford W. Welsch, and Walter J. Esselman. "Protein tyrosine phosphatases." In Mammary Tumor Cell Cycle, Differentiation, and Metastasis, 107–25. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-1259-8_6.

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Conference papers on the topic "Protesi mammaria"

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Berkner, K. L., S. J. Busby, J. Gambee, and A. Kumar. "EXPRESSION IN MAMMALIAN CELLS OF FUSION PROTEINS BETWEEN HUMAN FACTORS IX AND VII." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643568.

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The vitamin K-dependent plasma proteins demonstrate remarkable similarities in their structures: all have multiple domains in common and extensive homology is observed within many of these domains. In order to investigate the structure-function relationship of these proteins, we have interchanged domains of one protein (factor IX) with that of another (factor VII) and have compared the expression of these fusion proteins with recombinant and native factors IX and VII. Oligonucleotide-directed mutagenesis was used to generate four fusion proteins: factor IX/VII-1, which contains the factor IX leader and gla domain fused to the growth factor and serine protease of factor VII; factor VII/IX-1, a reciprocal fusion protein of factor IX/VII-1; factor IX/VII-2, which contains the factor IX leader adjoined to the mature factor VII protein sequence; and factor VII/IX-2, the reciprocal fusion protein of factor IX/VII-2. The cDNAs encoding all four proteins were cloned into mammalian expression vectors, and to date three of these (factors IX/VII-1, 2 and VII/IX-1) have been transfected into baby hamster kidney (BHK) cells or 293 cells and characterized. Factors IX/VII-1 and VII/IX-1 were both secreted at levels comparable to recombinant factors IX and VII. The factor IX/VII-1 was identical in molecular weight to native or recombinant factor VII (i.e., 53 K). Factor VII/IX-1 was expressed as two proteins with molecular weights around 68 kd, as observed with recombinant factor IX. The factor IX/VII-1 protein has been purified to homogeneity and has been found to possess factor VII biological activity, but at a specific activity approximately 20% that of plasma factor VII. Thus, the gla domain of one clotting factor is capable of directing the activation of another and of generating biologically active protein. In contrast, no activity was observed with the factor IX/VII-2 fusion protein, indicating that there are limits to the interchanges which can generate functional blood clotting factors.
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Grahn, Dennis A., Christina L. Hall, and H. Craig Heller. "Vacuum Enhanced Heat Transfer Through Mammalian Radiator Structures." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-192604.

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Most mammals, including humans, maintain relatively constant internal temperatures despite changes in ambient conditions and fluctuations in internal heat production. To achieve this end, an individual must be able to: 1) protect the internal milieu from external thermal challenges and 2) dissipate excess internally produced heat. Heat is produced as a byproduct of cellular metabolism and is lost to the environment across the body surface. The thermoregulatory challenge is to dissipate excess internally produced heat despite the insulation layers that protect the internal milieu from external thermal influences.
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Foster, D., B. Schach, M. Rudinsky, K. Berkner, A. Kumar, C. Sprecher, F. Hagen, and E. W. bavie. "The Effect of Changes in the Leader Sequence of Human Protein C on Biosynthetic Processing and Gamma-Carboxylation." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643648.

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Protein C is the precursor to a serine protease in plasma which contains gamma-carboxy glutamic acid and functions as a potent anticoagulant. Protein C shows considerable structural homology with the other vitamin K-dependent coagulation factors including prothrombin, factor VII, factor IX and factor X. This homology includes the putative pro-peptide region of the prepro leader sequences for these proteins, as well as the leader sequences for gamma-carboxylated proteins from bone. Deletion mutants have been constructed in the cDNA for human protein C in order to test the possibility that the pro-peptide portion of the 42 amino acid leader sequence serves as a molecular signal for gamma-carboxylation. Accordingly, these mutants contain the pre-peptide (hydrophobic leader) plus portions of the pro-peptide at the amino terminus of the light chain. The mutant proteins were expressed in carboxylation-competent mammalian cells and analyzed by barium citrate precipitation and N-terminal amino acid sequencing. These studies have shown that deletions in the pro-peptide region interfere with gamma-carboxylation and removal of the pro-peptide. Deletion of residues −1 through −12 had little effect on the carboxylation or secretion. Deletion of −1 through −17 completely abolished gamma-carboxylation, but had no measurable effect on secretion. Amino terminal sequence analysis of the latter mutant showed that the light chain began with Thr-Pro-Ala-Pro... This corresponds to a sequence in the prepro leader starting at −24. This indicates that the signal peptidase cleavage site for human protein C is between residues −25 and −24 and removal of the pro-peptide had been blocked by the deletion.
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Meaud, Julien, and Charlsie Lemons. "A physiologically-based time domain model of the mammalian ear." In MECHANICS OF HEARING: PROTEIN TO PERCEPTION: Proceedings of the 12th International Workshop on the Mechanics of Hearing. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4939383.

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Ghaffari, Roozbeh, Scott Page, Shirin Farrahi, Jonathan B. Sellon, and Dennis M. Freeman. "Electromechanical role of fixed charge in the mammalian tectorial membrane." In MECHANICS OF HEARING: PROTEIN TO PERCEPTION: Proceedings of the 12th International Workshop on the Mechanics of Hearing. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4939392.

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Campos, L. M., A. G. Rius, D. Kirovski, J. A. D. R. N. Appuhamy, T. F. V. Bompadre, and M. D. Hanigan. "Mammary gland amino acid affinity in response to different levels of dietary protein and insulin." In 6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition. The Netherlands: Wageningen Academic Publishers, 2019. http://dx.doi.org/10.3920/978-90-8686-891-9_120.

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Bompadre, T. F. V., L. M. Campos, A. G. Rius, D. Kirovski, J. A. D. R. N. Appuhamy, and M. D. Hanigan. "Mammary gland amino acid flux for lactating dairy cows in response to hyperinsulinemia and dietary protein." In 6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition. The Netherlands: Wageningen Academic Publishers, 2019. http://dx.doi.org/10.3920/978-90-8686-891-9_121.

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Omphalius, C., S. Lemosquet, D. R. Ouellet, L. Bahloul, and H. Lapierre. "Protein and energy affect splanchnic and mammary metabolisms and drive amino acid use in dairy cows." In 6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition. The Netherlands: Wageningen Academic Publishers, 2019. http://dx.doi.org/10.3920/978-90-8686-891-9_65.

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Foster, D., B. Schach, M. Rudisky, K. Berkner, A. Kumar, A. Kumar, C. Sprecher, F. Hagen, and E. W. Davie. "The Effect of Changes in the Leader Sequence of Human Protein C on Biosynthetic Processing and Gamma-Carboxylation." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643993.

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Protein C is the precursor to a serine protease in plasma which contains gamma-carboxy glutamic acid and functions as a potent anticoagulant. Protein C shows considerable structural homology with the other vitamin K-dependent coagulation factors including prothrombin, factor VII, factor IX and factor X. Sequence analysis ofthe cDNAs for these proteins has revealedthe presence of a prepro leader sequence that contains a pre sequence or hydrophobic signal sequence and a propeptide containing a number of highly conserved amino acids. The pre region is removed from thegrowing polypeptide chain by signal peptidase, while the pro region is subsequently removed from the protein prior to secretion. Deletion mutants have been constructed in the propeptide portion of the cDNAfor human protein C in order to test the possibility that the propeptide portion of the 42 amino acid leader sequence serves as a molecular signal for gamma-carboxylation.Accordingly, these mutants containthe pre-peptide (hydrophobic leader) plusportions of the pro-peptide at the amino terminus of the light chain. These deletions include the removal of 4, 9, 12, 15, 16 or 17 amino acids from the carboxyl end of the leader sequence of 42 amino acids. The mutant proteins were expressed in carboxylation-competent mammalian cells and were then examined by Western blotting, barium citrate adsorption and precipitation, amino acid sequence analysis, and biological activity and compared with the native protein present in normal plasma. These studies have shown that deletions inthe pro-peptide region interfere with gamma-carboxylation and removal of the pro-peptide. Deletion of residues -1 through -12 had little effect on the carboxylationor secretion. Deletion of -1 through -17 completely abolished gamma-carboxylation, but had no measurable effect on secretion.Amino terminal sequence analysis of thelatter mutant showed that the light chainbegan with Thr-Pro-Ala-Pro... This corresponds to a sequence in the prepro leader starting at -24. This indicates that the signal peptidase cleavage site for human protein C is between residues -25 and -24 and removal of the pro-peptide had been blocked by the deletion.Furthermore, during biosynthesis and secretion, the amino-terminal region of the propeptide (residues from about -12 through -17) are important for carboxylation of protein C, while the carboxyl-terminal portion of the peptide (residues -1 through -4) are important for the removal of the proleader sequence by proteolytic processing.
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Wha Lin, Shu, J. Ware, H. Roberts, N. McGraw, W. McAllister, and D. Stafford. "EXPRESSION OF HUMAN FACTOR IX IN MAMMALIAN CELLS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643567.

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Human factor IX has been expressed in mammalian cells. A cloned factor IX cDNA missing the first 15 nucleotides of the 5’ end was modified by in vitro mutagenesis to restore the missing codons and add the translation consensus sequence, CCACC, proposed by Kozak to be optimal for translational initiation. Additionally, Bgl II and BamHI sites were added immediately upstream of the CCACC sequence for ease of portability of the fragment. This modified cDNA was inserted into a bovine papillomavirus (BPV) vector under the control of a mouse met alio thionein promoter. The constructed plasmid pBPV-IX was used to transfect a mouse fibroblast cell line C127. After 3 weeks, the transformed foci were isolated and the established cell lines were grown in the presence or absence of vitamin K. Media was collected at 3 day intervals and assayed for factor IX activity in a one stage clotting assay. A standard curve was constructed using purified human factor IX. Cells grown in the presence of vitamin K (3 mg/L) exhibited an activity equivalent to 350 ng/ml of factor IX in the cell media; no (less than 3 ng/ml) activity was detectable in the absence of vitamin K. A monoclonal antibody column specific for the Ca++ dependent form of human factor IX allowed the isolation of approximately 7 ug of purified factor IX from approximately 100 ml of culture medium. Western blot analysis of the purified factor IX revealed 2 protein bands which reacted with a goat anti-human factor IX antibody as well as a human specific monoclonal antibody. One of the immunoreactive bands migrates with authentic human factor IX and the other migrates slower. This expression system provides a convenient way to produce suitable amounts of factor IX and mutated factor IX protein for functional analyses.
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Reports on the topic "Protesi mammaria"

1

Huber, Louise J. Role of the Wnt-4 Protein in the Mouse Mammary Gland. Fort Belvoir, VA: Defense Technical Information Center, July 1999. http://dx.doi.org/10.21236/ada383251.

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Huber, Louise J., and Lewis A. Chodosh. Role of the Wnt-4 Protein in the Mouse Mammary Gland. Fort Belvoir, VA: Defense Technical Information Center, July 2001. http://dx.doi.org/10.21236/ada405345.

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3

Mishra, N. C. Characterization of the mammalian DNA polymerase gene and protein. Annual progress report. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/90178.

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Mishra, N. C. Characterization of the mammalian DNA polymerase gene and protein. Annual progress report. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/10165626.

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Sap, Jan M. The Role of RPTP-Alpha-Like Protein Tyrosine Phosphatases in Mammary Tumorigenesis. Fort Belvoir, VA: Defense Technical Information Center, May 2001. http://dx.doi.org/10.21236/ada395401.

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6

Gibby, Krissa. Role of Fibroblast Growth Factor Binding Protein-1 in Mammary Development and Tumorigenesis. Fort Belvoir, VA: Defense Technical Information Center, October 2009. http://dx.doi.org/10.21236/ada525608.

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Liu, Yiliang. Omega-3 Fatty Acids and a Novel Mammary Derived Growth Inhibitor Fatty Acid Binding Protein MRG in Suppression of Mammary Tumor. Fort Belvoir, VA: Defense Technical Information Center, July 2001. http://dx.doi.org/10.21236/ada396066.

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Liu, Yiliang E. Omega-3 Fatty Acids and a Novel Mammary Derived Growth Inhibitor Fatty Acid Binding Protein MRG in Suppression of Mammary Tumor. Fort Belvoir, VA: Defense Technical Information Center, July 2002. http://dx.doi.org/10.21236/ada408070.

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Wang, Mingsheng. Breast Cancer Prevention by a Fatty Acid Binding Protein MRG-Induced Pregnancy Like Mammary Gland Differentiation. Fort Belvoir, VA: Defense Technical Information Center, August 2004. http://dx.doi.org/10.21236/ada427084.

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Imagawa, Walter T. Mechanisms of Altered Control of Proliferation by Cyclic Amp/Protein Kinase A During Mammary Tumor Progression. Fort Belvoir, VA: Defense Technical Information Center, June 1999. http://dx.doi.org/10.21236/ada374059.

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